/Engine/Source/Runtime/MeshDescription/Public/MeshDescription.h
Populates the passed array with the polygons connected to this vertex instance
template<typename Alloc> void GetVertexInstanceConnectedPolygons ( const [FVertexInstanceID](API\Runtime\MeshDescription\FVertexInstanceID) VertexInstanceID, [TArray](API\Runtime\Core\Containers\TArray)< [FPolygonID](API\Runtime\MeshDescription\FPolygonID), Alloc > & OutPolygonIDs ) const